What is the modern Periodic table Based on? Select all that apply. A. atomic number
B. atomic mass
C. oxidation number
D. valence electrons
E. electron configuration

The answer(s) is A and E.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

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